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    <meta name="description" content="Draw a cylinder or cone.">
    <meta name="cesium-sandcastle-labels" content="Development">
    <title>Cesium Demo</title>
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<style>
    @import url(../templates/bucket.css);
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<script id="cesium_sandcastle_script">
function startup(Cesium) {
    'use strict';
//Sandcastle_Begin
// Create the viewer.
var viewer = new Cesium.Viewer('cesiumContainer');
var scene = viewer.scene;

// Example 1: Draw a green cylinder and position with
// a model matrix.

// Cylinder geometries are initially centered on the origin.
// We can use a model matrix to position the cylinder on the
// globe surface.
var length = 400000.0;
var positionOnEllipsoid = Cesium.Cartesian3.fromDegrees(-100.0, 40.0);
var modelMatrix = Cesium.Matrix4.multiplyByTranslation(
    Cesium.Transforms.eastNorthUpToFixedFrame(positionOnEllipsoid),
    new Cesium.Cartesian3(0.0, 0.0, length * 0.5), new Cesium.Matrix4()
);
// Create the cylinder geometry.
var cylinderGeometry = new Cesium.CylinderGeometry({
    length : length,
    topRadius : 200000.0,
    bottomRadius : 200000.0,
    vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT
});
// Create a geometry instance using the cylinder geometry
// created above. We can also specify a color attribute,
// in this case, we're creating a solid green color.
var greenCylinder = new Cesium.GeometryInstance({
    geometry : cylinderGeometry,
    modelMatrix : modelMatrix,
    attributes : {
        color : Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.GREEN)
    }
});

// Example 2: Draw a red cone and position with
// a model matrix.
positionOnEllipsoid = Cesium.Cartesian3.fromDegrees(-105.0, 40.0);
modelMatrix = Cesium.Matrix4.multiplyByTranslation(
    Cesium.Transforms.eastNorthUpToFixedFrame(positionOnEllipsoid),
    new Cesium.Cartesian3(0.0, 0.0, length * 0.5), new Cesium.Matrix4()
);
// Create the cylinder geometry.  To create a cone, set the
// top radius to zero.
cylinderGeometry = new Cesium.CylinderGeometry({
    length : length,
    topRadius : 0.0,
    bottomRadius : 200000.0,
    vertexFormat : Cesium.PerInstanceColorAppearance.VERTEX_FORMAT
});
// Create a geometry instance using the cylinder geometry
// created above.
var redCone = new Cesium.GeometryInstance({
    geometry : cylinderGeometry,
    modelMatrix : modelMatrix,
    attributes : {
        color : Cesium.ColorGeometryInstanceAttribute.fromColor(Cesium.Color.RED)
    }
});

// Add both instances to primitives.
scene.primitives.add(new Cesium.Primitive({
    geometryInstances : [greenCylinder, redCone],
    appearance : new Cesium.PerInstanceColorAppearance({
        closed : true,
        translucent: false
    })
}));
//Sandcastle_End
    Sandcastle.finishedLoading();
}
if (typeof Cesium !== 'undefined') {
    window.startupCalled = true;
    startup(Cesium);
}
</script>
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